/**
 * @ClassName: CodeGenerator
 * @Description:
 * @Author: 徐建文
 * @Date: 2021/11/10 16:56
 * @Version: v1.0
 */
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.builder.ConfigBuilder;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
import lombok.extern.slf4j.Slf4j;

import java.io.File;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

@Slf4j
public class CodeGenerator {
    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + "：");
        log.info(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (ipt != null && ipt.length() > 0) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "！");
    }

    public static void main(String[] args) throws NoSuchFieldException, IllegalAccessException {
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir")+"/demo-base-dao/" ;
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setAuthor("genCode");
        gc.setOpen(false);
        gc.setSwagger2(true); // 实体属性 Swagger2 注解
        gc.setBaseResultMap(true);
        gc.setBaseColumnList(true);
        gc.setServiceName("%sService");	//去掉Service接口的首字母I

        gc.setFileOverride(true);
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        // dsc.setSchemaName("public");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");

        dsc.setUrl("jdbc:mysql://127.0.0.1:3306/db_demo_base?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT%2B8&useSSL=false&zeroDateTimeBehavior=CONVERT_TO_NULL&allowPublicKeyRetrieval=true");
        dsc.setUsername("root");
        dsc.setPassword("123456");

        mpg.setDataSource(dsc);


        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(scanner("模块名"));
//        pc.setModuleName("gov");
        mpg.setPackageInfo(pc);


        // 策略配置


        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
//        strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        strategy.setEntityTableFieldAnnotationEnable(true);
        // 公共父类
//        strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
        // 写于父类中的公共字段
//        strategy.setSuperEntityColumns("id");
        strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
        strategy.setControllerMappingHyphenStyle(true);

        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());





        customPackagePath(pc,mpg);



        mpg.execute();
    }

    /**
     * 自定义包路径，文件生成路径，这边配置更灵活
     * 虽然也可以使用InjectionConfig设置FileOutConfig的方式设置路径
     * 这里直接使用Map方式注入ConfigBuilder配置对象更加直观
     * @param pc
     * @param mpg
     * @throws NoSuchFieldException
     * @throws IllegalAccessException
     */
    public static void customPackagePath(PackageConfig pc,AutoGenerator mpg) throws NoSuchFieldException, IllegalAccessException {

        String projectPath = System.getProperty("user.dir")+"/demo-base-dao/" ;
        String mavenPath = "/src/main/java/";
        String srcPath = projectPath+mavenPath;

        String servicePath = System.getProperty("user.dir")+"/demo-base-service/"+mavenPath ;
        String controllerPath = System.getProperty("user.dir")+"/demo-base-boot/"+mavenPath ;

        String moduleName = pc.getModuleName();

        /**
         * packageInfo配置controller、service、serviceImpl、entity、mapper等文件的包路径
         * 这里包路径可以根据实际情况灵活配置
         */
        Map<String,String> packageInfo = new HashMap<>();
        packageInfo.put(ConstVal.CONTROLLER, "com.lagou.seckill.base.controller."+moduleName);
        packageInfo.put(ConstVal.SERVICE, "com.lagou.seckill.base.service."+moduleName);
        packageInfo.put(ConstVal.SERVICE_IMPL, "com.lagou.seckill.base.service."+moduleName+".impl");
        packageInfo.put(ConstVal.ENTITY, "com.lagou.seckill.base.entity."+moduleName);
        packageInfo.put(ConstVal.MAPPER, "com.lagou.seckill.base.mapper."+moduleName);

        /**
         * pathInfo配置controller、service、serviceImpl、entity、mapper、mapper.xml等文件的生成路径
         * srcPath也可以更具实际情况灵活配置
         * 后面部分的路径是和上面packageInfo包路径对应的源码文件夹路径
         * 这里你可以选择注释其中某些路径，可忽略生成该类型的文件，例如:注释掉下面pathInfo中Controller的路径，就不会生成Controller文件
         */
        Map pathInfo = new HashMap<>();
        pathInfo.put(ConstVal.CONTROLLER_PATH, controllerPath + packageInfo.get(ConstVal.CONTROLLER).replaceAll("\\.", StringPool.BACK_SLASH + File.separator));
        pathInfo.put(ConstVal.SERVICE_PATH, servicePath + packageInfo.get(ConstVal.SERVICE).replaceAll("\\.", StringPool.BACK_SLASH + File.separator));
        pathInfo.put(ConstVal.SERVICE_IMPL_PATH, servicePath + packageInfo.get(ConstVal.SERVICE_IMPL).replaceAll("\\.", StringPool.BACK_SLASH + File.separator));
        pathInfo.put(ConstVal.ENTITY_PATH, srcPath + packageInfo.get(ConstVal.ENTITY).replaceAll("\\.", StringPool.BACK_SLASH + File.separator));
        pathInfo.put(ConstVal.MAPPER_PATH, srcPath + packageInfo.get(ConstVal.MAPPER).replaceAll("\\.", StringPool.BACK_SLASH + File.separator));
        pathInfo.put(ConstVal.XML_PATH, projectPath+"/src/main/java/com/lagou/seckill/base/dao/mapper/"+moduleName+"/xml/");
        pc.setPathInfo(pathInfo);

        /**
         * 创建configBuilder对象，传入必要的参数
         * 将以上的定义的包路径packageInfo配置到赋值到configBuilder对象的packageInfo属性上
         * 因为packageInfo是私有成员变量，也没有提交提供公共的方法，所以使用反射注入
         * 为啥要这么干，看源码去吧
         */
        ConfigBuilder configBuilder = new ConfigBuilder(mpg.getPackageInfo(), mpg.getDataSource(), mpg.getStrategy(), mpg.getTemplate(), mpg.getGlobalConfig());
        Field packageInfoField = configBuilder.getClass().getDeclaredField("packageInfo");
        packageInfoField.setAccessible(true);
        packageInfoField.set(configBuilder,packageInfo);

        /**
         * 设置配置对象
         */
        mpg.setConfig(configBuilder);
    }
}